Watched a demo on the prototype transparent LCD screen that was shown at CES.
http://blogs.zdnet.com/gadgetreviews/?p=10831&tag=col1;post-10831
The thing is really cool. The only drawback was that the screen was only 40% transparent. Like looking through sunglasses.
I can see some auto maker trying to stick it in a car. Like cell phones the insurance industry will get the lawmakers to pass laws banning them.